Clark Construction Company
- Professional construction services for commercial, institutional, industrial, and resort clients. Includes portfolio, job and bid opportunities. Offices in Lansing and Petoskey.

Spence Brothers
- With over 110 years in the construction business, the company offers services of construction management, general contracting, design, pre-construction consulting, and project management. Offices in Saginaw, Traverse City, and Ann Arbor.

Tommark, Inc.
- Wholesaler of heating, air conditioning, air quality, and temperature control products.